Journal article
VERITAS Observations of the BL Lac Object TXS 0506+056
Astrophysical journal. Letters, v 861(2), pL20
12 Jul 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
On 2017 September 22, the IceCube Neutrino Observatory reported the detection of the high-energy neutrino event IC 170922A, of potential astrophysical origin. It was soon determined that the neutrino direction was consistent with the location of the gamma-ray blazar TXS 0506+056 (3FGL J0509.4+0541), which was in an elevated gamma-ray emission state as measured by the Fermi satellite. Very Energetic Radiation Imaging Telescope Array System (VERITAS) observations of the neutrino/blazar region started on 2017 September 23 in response to the neutrino alert and continued through 2018 February 6. While no significant very-high-energy (VHE; E > 100 GeV) emission was observed from the blazar by VERITAS in the two-week period immediately following the IceCube alert, TXS 0506+056 was detected by VERITAS with a significance of 5.8 standard deviations ( ) in the full 35 hr data set. The average photon flux of the source during this period was (8.9 1.6) × 10−12 cm−2 s−1, or 1.6% of the Crab Nebula flux, above an energy threshold of 110 GeV, with a soft spectral index of 4.8 1.3.
Metrics
Details
- Title
- VERITAS Observations of the BL Lac Object TXS 0506+056
- Creators
- A. U Abeysekara - Department of Physics and Astronomy, University of Utah , Salt Lake City, UT 84112, USAA Archer - Department of Physics, Washington University , St. Louis, MO 63130, USAW Benbow - Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645, USAR Bird - Department of Physics and Astronomy, University of California , Los Angeles, CA 90095, USAA Brill - Physics Department, Columbia University , New York, NY 10027, USAR Brose - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyJ. H Buckley - Department of Physics, Washington University , St. Louis, MO 63130, USAJ. L Christiansen - Physics Department, California Polytechnic State University , San Luis Obispo, CA 94307, USAA. J Chromey - Department of Physics and Astronomy, Iowa State University , Ames, IA 50011, USAM. K Daniel - Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645, USAA Falcone - Pennsylvania State UniversityQ Feng - Physics Department, McGill University , Montreal, QC H3A 2T8, CanadaJ. P Finley - Department of Physics and Astronomy, Purdue University , West Lafayette, IN 47907, USAL Fortson - School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USAA Furniss - Department of Physics, California State University, East Bay , Hayward, CA 94542, USAG. H Gillanders - School of Physics, National University of Ireland Galway , University Road, Galway, IrelandO Gueta - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyD Hanna - Physics Department, McGill University , Montreal, QC H3A 2T8, CanadaO Hervet - Santa Cruz Institute for Particle Physics and Department of Physics, University of California , Santa Cruz, CA 95064, USAJ Holder - Department of Physics and Astronomy and the Bartol Research Institute, University of Delaware , Newark, DE 19716, USAG Hughes - Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645, USAT. B Humensky - Physics Department, Columbia University , New York, NY 10027, USAC. A Johnson - Santa Cruz Institute for Particle Physics and Department of Physics, University of California , Santa Cruz, CA 95064, USAP Kaaret - Department of Physics and Astronomy, University of Iowa , Van Allen Hall, Iowa City, IA 52242, USAP Kar - Department of Physics and Astronomy, University of Utah , Salt Lake City, UT 84112, USAN Kelley-Hoskins - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyM Kertzman - Department of Physics and Astronomy, DePauw University , Greencastle, IN 46135-0037, USAD Kieda - Department of Physics and Astronomy, University of Utah , Salt Lake City, UT 84112, USAM Krause - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyF Krennrich - Department of Physics and Astronomy, Iowa State University , Ames, IA 50011, USAM. J Lang - School of Physics, National University of Ireland Galway , University Road, Galway, IrelandP Moriarty - School of Physics, National University of Ireland Galway , University Road, Galway, IrelandR Mukherjee - Department of Physics and Astronomy, Barnard College, Columbia University , NY 10027, USAS O'Brien - School of Physics, University College Dublin , Belfield, Dublin 4, IrelandR. A Ong - Department of Physics and Astronomy, University of California , Los Angeles, CA 90095, USAA. N Otte - School of Physics and Center for Relativistic Astrophysics, Georgia Institute of Technology, 837 State Street NW, Atlanta, GA 30332-0430, USAN Park - Enrico Fermi Institute, University of Chicago , Chicago, IL 60637, USAA Petrashyk - Physics Department, Columbia University , New York, NY 10027, USAM Pohl - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyE Pueschel - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyJ Quinn - School of Physics, University College Dublin , Belfield, Dublin 4, IrelandK Ragan - Physics Department, McGill University , Montreal, QC H3A 2T8, CanadaP. T Reynolds - Department of Physical Sciences, Cork Institute of Technology, Bishopstown, Cork, IrelandG. T Richards - Georgia Institute of TechnologyE Roache - Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645, USAC Rulten - School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USAI Sadeh - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyM Santander - Department of Physics and Astronomy, University of Alabama , Tuscaloosa, AL 35487, USAS. S Scott - Santa Cruz Institute for Particle Physics and Department of Physics, University of California , Santa Cruz, CA 95064, USAG. H Sembroski - Department of Physics and Astronomy, Purdue University , West Lafayette, IN 47907, USAK Shahinyan - School of Physics and Astronomy, University of Minnesota , Minneapolis, MN 55455, USAJ Tyler - McGill UniversityS. P Wakely - Enrico Fermi Institute, University of Chicago , Chicago, IL 60637, USAA Weinstein - Department of Physics and Astronomy, Iowa State University , Ames, IA 50011, USAR. M Wells - Department of Physics and Astronomy, Iowa State University , Ames, IA 50011, USAP Wilcox - Department of Physics and Astronomy, University of Iowa , Van Allen Hall, Iowa City, IA 52242, USAA Wilhelm - DESY, Platanenallee 6, D-15738 Zeuthen, GermanyD. A Williams - Santa Cruz Institute for Particle Physics and Department of Physics, University of California , Santa Cruz, CA 95064, USAT. J Williamson - Department of Physics and Astronomy and the Bartol Research Institute, University of Delaware , Newark, DE 19716, USAB Zitzer - Physics Department, McGill University , Montreal, QC H3A 2T8, CanadaA Kaur - Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University , University Park, PA 16802, USAVERITAS Collaboration
- Publication Details
- Astrophysical journal. Letters, v 861(2), pL20
- Publisher
- The American Astronomical Society
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000438664500001
- Scopus ID
- 2-s2.0-85050004763
- Other Identifier
- 991019201491304721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics